It’s true that the current trajectory will make white’s a minority in the near future. I submit it’s why they are trying so hard to reverse immigration patterns and suppress votes of minorities. Some, certainly not all, are doing whatever they can to stay in power and after that still keep control while a minority.
As to the proclivity of whites to breed with people of color. While it’s historically been truer of the males. There has never been a period in our history when it wasn’t true. It’s why we got away from the British custom of families being tied to the paternal bloodline. The early colonials changed to following the mother’s bloodline, primarily so the men could abandon all those mixed children they were creating.